# Peering and Transit Gateway Misconfigurations

> Master cloud network pivoting. Learn to exploit and defend against VPC peering and Transit Gateway misconfigurations that enable lateral movement.

Canonical: https://codelivly.com/rooms/peering-and-transit-gateway-misconfigurations
Last updated: 2026-09-25

| | |
|---|---|
| Level | Advanced |
| Category | Cloud Security |
| Lessons | 3 |
| Estimated time | 30 min |
| XP | 100 |

This advanced module explores the critical attack surface of cloud network interconnectivity. You will learn how adversaries exploit VPC peering connections and Transit Gateway (TGW) routing tables to pivot from compromised development environments into highly secure production networks. The curriculum covers analyzing cross-VPC trust boundaries, identifying overly permissive route propagation, and implementing strict network segmentation and route isolation to prevent catastrophic lateral movement across multi-account and hybrid cloud architectures.

## Lessons

1. What Is Peering Misconfiguration and Why Does It Matter (30 min)
2. Transitive Trust Risks in Multi-VPC Architectures (30 min)
3. Guided Lab: Identifying a Lateral Movement Path via VPC Peering (30 min)

## Related

- [Learning path: Cloud Networking Attack Surface](https://codelivly.com/learning-paths/cloud-networking-attack-surface)
- [All rooms](https://codelivly.com/rooms)